Abstract

This study compared the safety, bioequivalence, and pharmacokinetic properties of 2 formulations of 10-mg rivaroxaban tablets in healthy Chinese participants in fasting and fed arms. The trial was an open, randomized, 4-period, replicated crossover scheme, and 36 volunteers were recruited separately for the fasting and fed arms. Volunteers were randomly administered a single dose of the test or reference formulation (10mg) orally, followed by a 5-day washout period. Rivaroxaban concentrations in the plasma were determined using liquid chromatography-tandem mass spectrometry, and pharmacokinetic parameters were obtained from the concentration-time profiles. The mean values of the test and the reference product for the area under the plasma concentration-time curve from time 0 to the last measurable concentration, area under the plasma concentration-time curve from time 0 to infinity, and maximum plasma concentration were 996 and 1014 ng • h/mL, 1024 and 1055 ng • h/mL, and 150 and 152ng/mL in the fasting arm, respectively; the values were 1155 and 1167 ng • h/mL, 1160 and 1172 ng • h/mL, and 202 and 193ng/mL in the fed arm, respectively. All the parameters were within acceptable limits in terms of bioequivalence. No serious adverse events were observed. This study demonstrated that the 2 rivaroxaban tablets were bioequivalent in healthy Chinese participants under fasting and fed conditions.

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